Month: October 2022

Yang, Shenshen; Zhang, Xinyue; Dong, Yaqian; Sun, Guijiang; Jiang, Aili; Li, Yubo published the artcile< Cleavage rules of mass spectrometry fragments and rapid identification of chemical components of Radix Paeoniae Alba using UHPLC-Q-TOF-MS>, Reference of 112-63-0, the main research area is Radix Paeoniae Alba mass spectrometry fragment; Radix Paeoniae Alba; UHPLC-Q-TOF-MS; characteristic fragment; cleavage rules; neutral loss.

Radix Paeoniae Alba (RPA) presents several pharmacol. effects, including analgesia, liver protection, and toxicity reduction RPA consists mostly of monoterpenes and their glycosides, tannins, flavonoids, and organic acids, with monoterpenes being the main active pharmaceutical ingredients. To establish an effective method for rapid classification and identification of the main monoterpenes, flavonoids, and organic acids in RPA. We used ultrahigh-performance liquid chromatog. quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS) and data post-processing technol. to rapidly classify and identify the monoterpenoids, flavonoids, and organic acids in RPA. We also summarised the diagnostic product ions and neutral losses of monoterpenoids, flavonoids, and organic acids in RPA reported in the literature. We identified 24 components, namely 18 monoterpenoids, one flavonoid, and five organic acids. In this study, we analyzed the chem. active pharmaceutical ingredients and assessed the quality of RPA. In addition, we demonstrated that UHPLC-Q-TOF-MS can be used to qual. classify and identify the variety of chem. components of traditional Chinese medicines (TCMs) to a certain extent. Moreover, we confirmed that mass spectrometry can be used to identify the components of TCMs.

Phytochemical Analysis published new progress about Analgesia. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chiang, I.-Tsang; Liu, Yu-Chang; Liu, Hua-Shan; Ali, Ahmed Atef Ahmed; Chou, Szu-Yi; Hsu, Tsung-I.; Hsu, Fei-Ting published the artcile< Regorafenib Reverses Temozolomide-Induced CXCL12/CXCR4 Signaling and Triggers Apoptosis Mechanism in Glioblastoma>, Product Details of C19H34O2, the main research area is glioblastoma regorafenib temozolomide signaling; CXCR4/CXCL12; Glioblastoma; NF-κB; Regorafenib; Temozolomide.

Abstract: Temozolomide (TMZ) monotherapy is known to be insufficient for resistant/relapsed glioblastoma (GBM), thus seeking a sensitization agent for TMZ is necessary. It was found that regorafenib may improve the overall survival of relapsed GBM patients. We aimed to discover whether regorafenib can enhance the anti-GBM effects of TMZ, and elucidate underlying mechanism. Our anal. of The Cancer Genome Atlas database revealed that the increased expression of CXCR4 is linked to poor survival of GBM patients. Addnl., TMZ treatment may trigger CXCR4/CXCL12 axis of GBM. We used two GBM cell lines, two primary GBM cells, and animal model to identify underlying mechanism and treatment efficacy of regorafenib combined with TMZ by cytotoxicity, apoptosis, reporter gene and invasion/migration assays, chemokine array, Western blotting, MRI, microarray, and immunohistochem. We observed that the chemokine CXCL-12 and its receptor CXCR4 regulate the resistance to TMZ, whereas the inhibition of CXCL-12/CXCR4 signaling sensitizes GBM cells to TMZ. The TMZ-induced CXCL-12/CXCR4 signaling, phosphor-extracellular signal-regulated kinases 1 and 2 (ERK1/2) and nuclear factor kappa light chain enhancer of activated B cells (NF-κB), and NF-κB-related proteins can effectively diminish when combining with regorafenib. Regorafenib significantly enhanced the TMZ-induced extrinsic/intrinsic apoptotic pathways, and facilitated the suppression of invasion and migration potential in GBM.

Neurotherapeutics published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Li; Jiao, Lei published the artcile< Pyridine-Catalyzed Radical Borylation of Aryl Halides>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is pyridine catalyzed radical borylation aryl halide diboron; aryl boronate preparation.

A pyridine-catalyzed transition-metal-free borylation reaction of haloarenes was developed based on the selective cross-coupling of an aryl radical and a pyridine-stabilized boryl radical. Arylboronates were produced from haloarenes under mild conditions. This borylation reaction features a broad substrate scope, operational simplicity, and gram-scale synthetic ability.

Journal of the American Chemical Society published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Leivers, Anna L.; Tallant, Matthew; Shotwell, J. Brad; Dickerson, Scott; Leivers, Martin R.; McDonald, Octerloney B.; Gobel, Jeff; Creech, Katrina L.; Strum, Susan L.; Mathis, Amanda; Rogers, Sabrinia; Moore, Chris B.; Botyanszki, Janos published the artcile< Discovery of Selective Small Molecule Type III Phosphatidylinositol 4-Kinase Alpha (PI4KIIIα) Inhibitors as Anti Hepatitis C (HCV) Agents>, Electric Literature of 112-63-0, the main research area is arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone preparation PI4KIII alpha aminoquinoxaline aminonaphthyridine inhibitor; structure arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone inhibition PI4KIII alpha selectivity; inhibition hepatitis C virus replication arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone; toxicity nonracemic arylaminosulfonylpyridinyl aminoquinazolinone PI4KIII alpha inhibitor.

Arylaminosulfonylpyridinyl and arylsulfonylaminopyridinyl aminoquinazolinones such as I and related aminonaphthyridines and an aminoquinoxaline were prepared as inhibitors of the type III phosphatidylinositol-4-kinase α (PI4KIIIα), a lipid kinase that interacts with the HCV nonstructural 5A protein and enriches the HCV replication complex with phosphatidylinositol 4-phosphate, for use in the treatment of hepatitis C infection by inhibiting hepatitis C replication. The inhibition of PI4KIIIα by arylaminosulfonylpyridinyl and arylsulfonylamino aminoquinazolinones, arylsulfonylaminopyridinyl aminonaphthyridines, and an arylsulfonylaminopyridinyl aminoquinoxaline and their selectivities for PI4KIIIα over related phosphatidylinositol-3-kinase isoforms were determined The PI4KIIIα inhibition of I, its enantiomer, and the racemate were compared; the pharmacokinetics for I and its enantiomer were determined and toxicity was seen in rats given either one 50 mg/kg dose or multiple 40 mg/kg doses.

Journal of Medicinal Chemistry published new progress about Antiviral agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bartels, Bjoern; Cueni, Philipp; Muri, Dieter; Koerner, Matthias published the artcile< Development of a safe and scalable route towards a tau PET tracer precursor>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is diazacarbazole scalable preparation tau PET tracer precursor; Buchwald-Hartwig amination; CH activation; Diazacarbazole; Direct arylation; PET tracer; Stille coupling; Suzuki-Miyaura cross-coupling; Tau.

A scalable 5-step synthesis of the diazacarbazole derivative I used as tau PET tracer precursor is reported. Key features of this synthesis include a Buchwald-Hartwig amination, a Pd catalyzed C-H activation and a Suzuki-Miyaura cross-coupling.

Bioorganic & Medicinal Chemistry published new progress about Alzheimer disease. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rotondo, Rossella; Oliva, Maria Antonietta; Arcella, Antonietta published the artcile< The Sesquiterpene Lactone Cynaropicrin Manifests Strong Cytotoxicity in Glioblastoma Cells U-87 MG by Induction of Oxidative Stress>, SDS of cas: 112-63-0, the main research area is Lactone Cynaropicrin Sesquiterpene Glioblastoma Cell Cytotoxicity Oxidative Stress; ROS; apoptosis; autophagy; cynaropicrin; oxidative stress; sesquiterpene lactone.

Cynaropicrin has shown a wide range of pharmacol. properties, such as antitumor action. Here, we showed the inhibitory effect of Cyn on human glioblastoma cell U-87 MG growth. According to the IC50 values, Cyn 4, 8 and 10 μM displayed a significant cytotoxicity, as confirmed by the cell count and MTT assay. Furthermore, Cyn completely abolished the ability of U-87 MG to form colonies and induced drastic morphol. changes. Interestingly, pretreatment with ROS scavenger N-acetylcysteine 3 mM reversed the cytotoxicity induced by Cyn 25 μM and preserved the cells by morphol. changes. Therefore, oxidative stress induction was evaluated at low 8- and high 25-μM concentrations in U-87 MG, as demonstrated by the quant. and qual. anal. of ROS. A prolonged increase in ROS generation under Cyn 25 μM exposure was followed by the loss of the mitochondrial membrane potential in treated U-87 MG cells. An acute treatment with Cyn 25 μM induced Cyt c release, as revealed by immunofluorescence staining and the activation of cell death pathways, apoptosis and autophagy. On the other hand, chronic treatment with Cyn 8 μM induced senescence, as revealed by the increase in SA-β-Gal activity. Moreover, at this concentration, Cyn led to ERK dephosphorylation accompanied by a relevant reduction of the NF-κB p65 subunit. Finally, the combined effect of TMZ and Cyn resulted in synergistic cytotoxicity, as evaluated by the Bliss additivity model. The strong cytotoxicity of Cyn was also confirmed on IDH1 mutant U-87 MG cells and patient-derived IDH wild-type glioblastoma cell lines NULU and ZAR. In conclusion, given the high toxicity at minimal concentrations, the high inhibition of tumor cell growth and synergy with the standard drug for glioblastoma TMZ, Cyn could be proposed as a potential adjuvant for the treatment of glioblastoma.

Biomedicines published new progress about Apoptosis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Pang, Xinlong; Chen, Chao; Su, Xiang; Li, Ming; Wen, Lirong published the artcile< Diverse Tandem Cyclization Reactions of o-Cyanoanilines and Diaryliodonium Salts with Copper Catalyst for the Construction of Quinazolinimine and Acridine Scaffolds>, Application In Synthesis of 112-63-0, the main research area is cyanoaniline diaryliodonium salt copper cyclization catalyst; quinazolinimine preparation; diaryliodonium salt cyanoaniline copper intramol electrophilic substitution catalyst; acridine preparation.

Two cyclization modes are realized to produce different nitrogen-containing heterocycles, i.e., quinazolin-4(3H)-imines, e.g., I, and acridines, e.g., II, by assembling o-cyanoanilines and diaryliodonium salts via tandem reaction pathways.

Organic Letters published new progress about Acridines Role: SPN (Synthetic Preparation), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ghanbari Moheb Seraj, Rahele; Tohidfar, Masoud; Azimzadeh Irani, Maryam; Esmaeilzadeh-Salestani, Keyvan; Moradian, Toktam; Ahmadikhah, Asadollah; Behnamian, Mahdi published the artcile< Metabolomics analysis of milk thistle lipids to identify drought-tolerant genes>, HPLC of Formula: 112-63-0, the main research area is Silybum metabolomics lipids drought stress FATA2 CYP86A1 PXG3.

Milk thistle is an oil and medicinal crop known as an alternative oil crop with a high level of unsaturated fatty acids, which makes it a favorable edible oil for use in food production To evaluate the importance of Milk thistle lipids in drought tolerance, an experiment was performed in field conditions under three different water deficit levels (Field capacity (FC), 70% FC and 40% FC). After harvesting seeds of the plant, their oily and methanolic extracts were isolated, and subsequently, types and amounts of lipids were measured using GC-MS. Genes and enzymes engaged in biosynthesizing of these lipids were identified and their expression in Arabidopsis was investigated under similar conditions. The results showed that content of almost all measured lipids of milk thistle decreased under severe drought stress, but genes (belonged to Arabidopsis), which were involved in their biosynthetic pathway showed different expression patterns. Genes biosynthesizing lipids, which had significant amounts were selected and their gene and metabolic network were established. Two networks were correlated, and for each pathway, their lipids and resp. biosynthesizing genes were grouped together. Four up-regulated genes including PXG3, LOX2, CYP710A1, PAL and 4 down-regulated genes including FATA2, CYP86A1, LACS3, PLA2-ALPHA were selected. The expression of these eight genes in milk thistle was similar to Arabidopsis under drought stress. Thus, PXG3, PAL, LOX2 and CYP86A1 genes that increased expression were selected for protein anal. Due to the lack of protein structure of these genes in the milk thistle, modeling homol. was performed for them. The results of mol. docking showed that the four proteins CYP86A1, LOX2, PAL and PXG3 bind to ligands HEM, 11O, ACT and LIG, resp. HEM ligand was involved in production of secondary metabolites and dehydration tolerance, and HEM binding site remained conserved in various plants. CA ligands were involved in synthesis of cuticles and waxes. Overall, this study confirmed the importance of lipids in drought stress tolerance in milk thistle.

Scientific Reports published new progress about Arabidopsis thaliana. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gao, Meng; Hu, Jun; Zhu, Yuejie; Wang, Xianqing; Zeng, Shumin; Hong, Yijiang; Zhao, Guang published the artcile< Ferroptosis and Apoptosis Are Involved in the Formation of L-Selenomethionine-Induced Ocular Defects in Zebrafish Embryos>, Application of C15H22N2O2, the main research area is Zebrafish embryos ferroptosis apoptosis selenomethionine; L-selenomethionine; ROS; apoptosis; ferroptosis; microphthalmia.

Selenium is an essential trace element for humans and other vertebrates, playing an important role in antioxidant defense, neurobiol. and reproduction However, the toxicity of excessive selenium has not been thoroughly evaluated, especially for the visual system of vertebrates. In this study, fertilized zebrafish embryos were treated with 0.5μM L-selenomethionine to investigate how excessive selenium alters zebrafish eye development. Selenium-stressed zebrafish embryos showed microphthalmia and altered expression of genes required for retinal neurogenesis. Moreover, ectopic proliferation, disrupted mitochondrial morphol., elevated ROS-induced oxidative stress, apoptosis and ferroptosis were observed in selenium-stressed embryos. Two antioxidants-reduced glutathione (GSH) and N-acetylcysteine (NAC)-and the ferroptosis inhibitor ferrostatin (Fer-1) were unable to rescue selenium-induced eye defects, but the ferroptosis and apoptosis activator cisplatin (CDDP) was able to improve microphthalmia and the expression of retina-specific genes in selenium-stressed embryos. In summary, our results reveal that ferroptosis and apoptosis might play a key role in selenium-induced defects of embryonic eye development. The findings not only provide new insights into selenium-induced cellular damage and death, but also important implications for studying the association between excessive selenium and ocular diseases in the future.

International Journal of Molecular Sciences published new progress about Antioxidants. 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Application of C15H22N2O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Garcia-Urricelqui, Ane; de Cozar, Abel; Campano, Teresa E.; Mielgo, Antonia; Palomo, Claudio published the artcile< syn-Selective Michael Reaction of α-Branched Aryl Acetaldehydes with Nitroolefins Promoted by Squaric Amino Acid Derived Bifunctional Broensted Bases>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is stereoselective Michael aryl acetaldehyde nitroolefin bifunctional cinchona squaric peptide.

Here we describe a direct access to 2,2,3-trisubstituted syn γ-nitroaldehydes by addition of α-branched aryl acetaldehydes to nitroolefins promoted by a cinchona based squaric acid-derived amino acid peptide. Different α-Me arylacetaldehydes react with β-aromatic and β-alkyl nitroolefins to afford the Michael adducts in high enantioselectivity and syn-selectivity. NMR experiments and DFT calculations predict the reaction to occur through the intermediacy of E-enolate. The interaction between the substrates and the catalyst follows Papai’s model, wherein an intramol. H-bond interaction in the catalyst between the NH group of one of the tert-leucines and the squaramide oxygen seems to be key for discrimination of the corresponding reaction transition states. Thus, e.g., 2-phenylpropanal + (E)-4-chloro-β-nitrostyrene → I (84%, 95:5 dr, 94% ee).

European Journal of Organic Chemistry published new progress about Aldehydes Role: SPN (Synthetic Preparation), PREP (Preparation) (γ-nitro). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics